The paperbacks in the A Diary Novel line proved to be rich inspiration for sexploitation film distributors.
Though made in '79, Teen Lust, an indie release, was a retitling of Police Academy Girls, rushed into re-release after 20th Century-Fox's Porky's went through the box office roof.
"You think about it all the time -- and so does she" was the film's marketing hook, which exploited a more modern male fantasy of women wanting sex as much as men did.
Interestingly, Porky's ('81), distributed by a conservative studio, adhered to the traditional take on voyeurism (male/female), reinforcing a tired stereotype...
...while hardcore pornographic writing acknowledged a more contemporary, progressive view of female sexuality.